A+B for Input-Output Practice (VIII)

http://acm.hdu.edu.cn/showproblem.php?pid=1096

Problem Description
Your task is to calculate the sum of some integers.

Input
Input contains an integer N in the first line, and then N lines follow. Each line starts with a integer M, and then M integers follow in the same line.

Output
For each group of input integers you should output their sum in one line, and you must note that there is a blank line between outputs.

Sample Input

3
4 1 2 3 4
5 1 2 3 4 5
3 1 2 3


Sample Output

10
 
15
 
6
 
-----------------------------------------

 1 #include <iostream>
 2 using namespace std;
 3 int main()
 4 {
 5     int m,n,a,s;
 6     cin >> m;
 7     for (int i=1;i<=m;i++)
 8     {
 9         cin >> n;
10         s=0;
11         for (int j=1;j<=n;j++)
12         {
13             cin >> a;
14             s+=a;
15         }
16         if (i!=m)
17         cout << s << endl << endl;
18         else
19         cout << s << endl;
20     }
21     return 0;
22 }